timer_list: split timer_list_show_tickdevices()

timer_list: split timer_list_show_tickdevices()

Split timer_list_show_tickdevices() out the header and just pull the rest up
to timer_list_show.  Also tweak the location of the whitespace.  This is all
to prep for the fix.

Signed-off-by: Nathan Zimmer <nzimmer@sgi.com>
Reported-by: Dave Jones <davej@redhat.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>